Doosan D33S-5 User Manual (English)

Questions and Answers:

H
hendricksdarrellAug 4, 2025
How to troubleshoot engine cranking but not starting in Doosan D33S-5 (Gas)?
- M
  Melissa GreenAug 4, 2025
  If your Doosan Lifting Systems engine cranks but won't start, several issues could be the cause. First, ensure the fuel tank isn't empty and is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace as needed), a faulty vapor connection (check for holes, loose clamps, or kinks), an electric fuel pump malfunction (check electrical connections, relay, and fuse), a malfunctioning fuel pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), incorrect air/fuel or ignition/spark control (see Advanced Diagnostics), or no VR Sensor signal (verify the VR signal is present).
H
haroldgreenAug 8, 2025
Why is my Doosan Lifting Systems difficult to start (Gas)?
- J
  Jeffrey ReedAug 8, 2025
  If your Doosan Lifting Systems experiences difficulty starting, it might be due to several reasons. Check if the fuel tank is almost empty, as this can cause fuel pump cavitations; ensure the tank is at least ¼ full. Other potential causes include a clogged fuel filter (repair or replace), an electric fuel pump malfunction (check connections, relay, and fuse, and verify the pump is operating), a malfunctioning pressure regulator (test its operation), a malfunctioning fuel injector (test its operation), or a clogged air filter (clean or replace as required). Also, incorrect air/fuel or ignition control could be the issue (see Advanced Diagnostics). For engine mechanical issues, consult the Engine Service Manual.
B
benjamin08Aug 16, 2025
Why does my Doosan Lifting Systems not accelerate or hesitate during acceleration (Gas)?
- D
  Dawn MooreAug 16, 2025
  If your Doosan Lifting Systems will not accelerate, hesitates during acceleration, or the engine stalls, first isolate the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Other potential causes include a fuel tank that's nearly empty (ensure it's at least ¼ full), a clogged fuel filter (repair or replace), a pressure regulator malfunction (test its operation), or a fuel injector malfunction (test its operation).
D
Daniel JonesAug 21, 2025
How to fix rough idle on Doosan Lifting Systems (Gas)?
- D
  Dr. Daniel HowardAug 21, 2025
  If your Doosan Lifting Systems has a rough idle, isolate the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Other potential causes include a pressure regulator malfunction (test its operation), a clogged fuel filter (repair or replace), or a vacuum leak (check between mixer and throttle body, throttle body and intake manifold, and intake manifold and cylinder head).
M
Mary JenkinsAug 26, 2025
What causes poor high speed performance in Doosan Lifting Systems (Gas)?
- J
  Joseph FrazierAug 26, 2025
  To address poor high-speed performance in your Doosan Lifting Systems, start by isolating the gasoline system by running the lift truck on LPG. Verify the LPG cylinder is full and the valve is open. If the problem does not exist in LPG mode, proceed with the corrective action steps below; if the problem also exists in LPG mode, the root cause is most likely something other than the fuel system. Also check for a clogged fuel filter (repair or replace), a plugged fuel line (remove obstruction), a clogged air filter (clean or replace), a faulty vapor connection (check for holes, tight clamps, and kinks), a pressure regulator malfunction (test its operation). For incorrect ignition control, see Advanced Diagnostics & Engine Service Manual.
M
Mary GutierrezAug 29, 2025
How to decrease high idle speed on Doosan Lifting Systems (Gas)?
- B
  brownjesseAug 29, 2025
  To troubleshoot high idle speed in your Doosan Lifting Systems, check the pedal return spring travel for binding. For incorrect idle speed control, see Advanced Diagnostics & Engine Service Manual.

Doosan D33S-5 Specifications

General

Model	D33S-5
Load Capacity	3300 kg
Fork Length	1070 mm
Power Source	Electric
Rated Capacity	3300 kg
Lift Speed (loaded)	0.48 m/s
Lowering Speed (unloaded)	0.50 m/s

Summary

Information Section

Foreword

Introduction to the manual's purpose, content, and storage recommendations.

Safety Information Overview

Covers essential safety precautions, warning signs, operator restraint system, and training requirements.

Operation Overview

Guidance for operators on lift truck controls, gauges, and basic operation procedures.

Information Section

Maintenance Overview

Guide to equipment care, detailing servicing intervals, procedures, and general maintenance tasks.

Environment Protection

Details about the company's ISO 14001 certification and environmental management system.

Safety Section

Important Safety Information

Emphasizes basic safety rules, precautions, and hazard identification for preventing accidents.

Warning Signs and Labels

Details on specific safety signs on the lift truck, their locations, and descriptions.

Operator Training and Safety Warnings

Warning about the necessity of proper training before operation and general safety warnings.

Safety Section

Parking Brake Operation and Inspection

Instructions for engaging, releasing, and inspecting the parking brake for safety.

Safety Section

General Hazard Information

General warnings and precautions to avoid hazards during operation and maintenance.

Safety Section

Pre-Operation Procedures

Details on mounting, dismounting, and performing walk-around inspections before operating the lift truck.

Safety Section

Safe Lift Truck Operation

Covers safe starting, pre-operation checks, and guidelines for operating the lift truck.

Safety Section

Load Handling and Parking Safety

Precautions for loading/unloading, parking the lift truck safely, and general load handling.

Safety Section

Maintenance Safety Precautions

Procedures for performing maintenance tasks safely, including warnings for pressure, fluid handling, and electrical safety.

Safety Section

Hazard Prevention

Precautions to prevent burns from hot components and fires/explosions from flammable materials.

Safety Section

Safety Equipment and Component Care

Safety guidelines for fire extinguishers, ether, hoses, lines, and tire maintenance.

Safety Section

Operator Seat Adjustments

Instructions for adjusting the operator's seat, including weight, backrest, and suspension features.

Safety Section

Seat Belt System

Information on the seat belt system's purpose, maintenance, inspection, and proper use.

Safety Section

Seat Belt Operation

Step-by-step instructions for properly fastening and releasing the seat belt.

Safety Section

Tipover Prevention and Stability

Understanding lift truck stability, center of gravity, and factors that prevent tipovers.

Safety Section

Load Capacity and Stability

Information on load capacity, nameplates, and how load center affects stability and safe operating load.

Safety Section

General Operating Safety Rules

Essential safety rules for operating forklift trucks, including training, proper attire, and general precautions.

Safety Section

Surviving a Tipover

Instructions for operators on how to survive an event of lift truck tipover.

General Section

Declaration of Conformity

Declaration by the manufacturer regarding compliance with EU directives for machinery and emissions.

General Section

Specifications Overview

Detailed technical specifications for various lift truck models, covering dimensions, performance, and weight.

General Section

Noise and Vibration Data

Data on sound pressure levels and whole-body vibration levels for various models according to EN standards.

General Section

Load Capacity Charts (Without Sideshift)

Load capacity charts for models without sideshift, specifying limits based on mast height and load center.

General Section

Load Capacity Charts (With Sideshift)

Load capacity charts for models with sideshift, detailing limits based on mast height and load center.

General Section

Load Capacity Charts (Narrow Tire)

Load capacity charts for models with narrow tire and sideshift cushion, detailing limits.

General Section

Load Capacity Charts (Wide Tire)

Load capacity charts for models with wide tire and sideshift cushion, detailing limits.

General Section

Serial Number Identification

Locations for identifying and recording lift truck, engine, and transmission serial numbers.

General Section

Attachment Abbreviations

List of abbreviations for various lift truck attachments and their meanings.

General Section

Operator Identification Plates and Mast Abbreviations

Information on operator plates, lift capacity, and common mast type abbreviations.

Operation Section

Operator Station and Monitoring Systems

Overview of the instrument panel, indicators, and gauges in the operator's station for monitoring truck status.

Operation Section

Instrument Panel Layout

Illustrations and explanations of the Diesel and LPG/GAS instrument panels and their indicators.

Operation Section

Instrument Panel Indicators and Gauges

Explanation of various indicator lights and gauges on the instrument panel for monitoring engine and system status.

Operation Section

Operator Controls and Indicators

Description of switches, indicators, and controls for horn, lights, LP gas level, and mast interlock.

Operation Section

Electrical and Engine Compartment Access

Function of electrical disconnect switch and procedures for accessing the engine compartment.

Operation Section

Audio System Controls

Location and function of controls for the AM/FM tuner, USB, and AUX player.

Operation Section

Audio System Display and Remote Control

Audio system display indicators and operation of the wired remote controller for adjustments.

Operation Section

Audio System Basic Operation

Steps for turning the audio unit on/off, adjusting volume, and configuring sound settings.

Operation Section

Audio System Modes and Radio Tuning

Operating audio modes like loudness and mute, and setting the radio reception region.

Operation Section

Radio Station Management

Procedures for tuning radio stations, saving them manually or automatically, and listening to presets.

Operation Section

USB Player Operation

Information on file compatibility and handling precautions for MP3/WMA USB playback.

Operation Section

USB Device Playback and Menu Operation

Steps for connecting, playing, pausing USB devices, and using the MENU button for scroll settings.

Operation Section

USB Playback Control

How to control USB playback using the dial for track/folder navigation and selecting playback modes.

Operation Section

MP3/WMA and USB Device Handling

Details on MP3/WMA file formats and precautions for using USB devices to prevent damage.

Operation Section

Auxiliary Audio and DMB Sound

Instructions for connecting auxiliary audio equipment and listening to DMB sound.

Handsfree Calling Operation

Using the handsfree mode for making and receiving calls, with call indication and audio output details.

Operation Section

Seat Switch System Functionality

Explanation of the seat switch system's function in disengaging the transmission when the operator leaves the seat.

Operation Section

Electrical and Fuel System Controls

Details on circuit breaker, seat adjustment, tilt steering column, and fuel selector switch operation.

Operation Section

Lift Truck Driving Controls

Explanation of lift truck controls including direction lever, inching pedal, service brake, and accelerator pedal.

Operation Section

Mast, Brake, and Sideshift Controls

Instructions for operating lift, tilt, and sideshift controls, and engaging/releasing the parking brake.

Operation Section

Refueling Procedures

Procedure for safely refueling gasoline or diesel engines, including warnings and notices.

Operation Section

Changing LP Tanks

Steps for safely changing LP tanks, including required protective clothing and safety checks.

Operation Section

Pre-Operation Walk-Around Inspection

Detailed walk-around inspection procedures to ensure the lift truck is safe to operate.

Operation Section

Engine Starting Procedures

Procedures for starting the engine, covering prestart conditions, gasoline, LP, and diesel engines.

Operation Section

Engine Starting Details

Prestart conditions and specific steps for starting gasoline engines, including starter engagement limits.

Operation Section

LP and Diesel Engine Starting Procedures

Safety warnings and starting procedures for LP and diesel engines in various conditions.

Operation Section

External Starting Source Procedure

Safety warnings and procedures for starting the lift truck using an external 12-volt power source.

Operation Section

Dual Fuel System Operation

Procedures for switching the fuel system between gasoline and LP gas.

Operation Section

Dual Fuel System Operation (LP to Gasoline)

Steps to switch the lift truck's fuel system from LP gas back to gasoline.

Operation Section

Post-Start Engine Checks

Observing indicator lights and gauges after starting the engine to ensure proper operation.

Operation Section

Lift Truck Driving Operations

Detailed steps for operating the lift truck using the power shift transmission, including starting and direction control.

Operation Section

Inching Control Operation

Explanation of the inching pedal's purpose and use for precise control at slow speeds.

Operation Section

Electronic Controlled Spark-Ignition Engines System

Description of the EMS and its components for the G424IE engine, including sensors and control modules.

Operation Section

G424I Engine System Description

Description of the EMS for the G424I engine, outlining its open loop LP and closed loop gasoline systems.

Operation Section

LP Fuel System Troubleshooting Guide

Basic checks for LP engine problems like cranking but not starting, covering fuel, electrical, and sensor issues.

Operation Section

LP/DF Fuel System Troubleshooting

Troubleshooting steps for LP/DF fuel systems, covering common symptoms and checks.

Operation Section

Gasoline Fuel System Troubleshooting

Troubleshooting steps for gasoline engine problems like cranking but not starting, covering fuel and electrical issues.

Operation Section

Advanced Diagnostics Overview

Explanation of the MIL, Diagnostic Trouble Codes (DTCs), and how the system performs self-tests.

Operation Section

Displaying Fault Codes from SECM Memory

Procedure to enter code display mode and retrieve Diagnostic Fault Codes (DFCs) from the SECM memory.

Operation Section

Reading Diagnostic Fault Codes

How to interpret diagnostic fault codes by observing the MIL flashes and their sequence.

Maintenance Section

Fork Inspection, Maintenance, and Repair

Guidelines for inspecting, maintaining, and repairing lift truck forks, including causes of failure.

Maintenance Section

Causes of Fork Failure

Details on improper modification, bent/twisted forks, fatigue, stress risers, and overloading as causes of fork failure.

Maintenance Section

Fork Inspection Procedures

Routine inspection procedures for forks, including daily, 12-month, and first installation checks.

Maintenance Section

Fork Maintenance and Repair Guidelines

Guidelines for fork repairs and modifications, specifying what should and may be performed.

12 Months Fork Inspection

Requirements for inspecting forks every 12 months, or every 6 months for heavy-duty operations.

Maintenance Section

Tire Inflation Information

Information on tire inflation, including shipping pressure, operating pressure, and adjustment precautions.

Maintenance Section

Torque Specifications

Torque specifications for metric hardware, standard bolts, nuts, taperlock studs, and hose clamps.

Maintenance Section

Cooling System Specifications

Information on engine operating temperatures and the importance of proper cooling system maintenance.

Maintenance Section

Coolant Water Quality Guidelines

Guidelines for acceptable water quality and the use of distilled or deionized water for coolant.

Antifreeze Recommendations

Recommendations for using automotive antifreeze, coolant mix concentrations, and proper antifreeze additions.

Maintenance Section

Fuel Specifications

General and specific guidelines for diesel fuel, including quality requirements and additives.

Maintenance Section

Lubricant Recommendations

Guidelines for selecting engine oil, hydraulic oil, drive axle oil, and grease based on specifications and classifications.

Maintenance Section

Lubricant Viscosities and Refill Capacities

Charts detailing lubricant viscosities based on ambient temperature and refill capacities for various compartments.

Maintenance Section

Lubricating Grease (MPGM)

Recommendations for using Multipurpose Molybdenum Grease (MPGM) for lubrication points.

Transmission Oil Specifications

Specifications and notes for transmission oil, emphasizing its use only in transmissions and avoiding multi-grade oils.

Brake Fluid Requirements

Requirements for heavy-duty hydraulic brake fluid for oil-cooled disc brakes.

Maintenance Intervals

When Required Maintenance

List of maintenance tasks to be performed as needed, including fuel tank filter, fuses, and battery checks.

Every 10 Service Hours or Daily

Daily inspection tasks for fluid leaks, oil level, coolant level, air cleaner indicator, and foot pedal operation.

First 50 - 100 Service Hours or a Week

Initial maintenance for new engines, including oil and filter changes, and transmission checks.

Every 250 Service Hours or Monthly

Monthly maintenance tasks including air intake system checks and belt adjustments.

Every 500 Service Hours or 3 Months

Servicing intervals for air intake system, belts, mast hinge pin, tilt cylinders, and crosshead rollers.

Every 1500 Service Hours or 9 Months

Maintenance tasks including ignition system inspection, spark plug replacement, and fuel filter replacement.

Every 2000 Service Hours or Yearly

Annual maintenance for engine valve lash, steer wheel bearings, drive wheel bearings, cooling system, and forks.

Every 2500 Service Hours or 15 Months

Maintenance tasks including hydraulic oil checks, battery system inspection, and oxygen sensor replacement.

Every 8000 Service Hours or 48 Months

Major service interval for timing belt replacement on specific LP/Dual Fuel engines.

Maintenance Section

Quick Reference to Maintenance Schedule

A schedule summarizing maintenance items, services required, page references, and intervals.

Maintenance Section

When Required Maintenance Procedures

Procedures for cleaning fuel tank filter cap and inspecting/lubricating seat, hood latch, and support cylinder.

Maintenance Section

Fuses, Bulbs, Circuit Breaker & Relay Management

Instructions for replacing fuses and bulbs, and resetting circuit breakers and relays.

Maintenance Section

Electrical System Components Service

Procedures for checking the circuit breaker and cleaning/inspecting battery terminals.

Maintenance Section

Diesel Fuel System Priming

Procedure for priming the diesel fuel system on engines equipped with or without an electric fuel pump.

Maintenance Section

Diesel Water Separator Check and Drain

Procedure for checking and draining water and contaminants from the fuel filter/water separator.

LP/Dual Fuel System Leak Test

Method for testing LP and Dual Fuel systems for leaks using a leak check solution.

Maintenance Section

Tire and Wheel Inspection

Inspection procedures for tires and wheels, including checking inflation, damage, and rim condition.

Carriage Roller Extrusion Adjustment

Procedure for adjusting carriage roller extrusion to ensure correct mast height.

Maintenance Section

Daily Inspection Procedures

Daily checks for engine fluid leaks, oil level, coolant level, air cleaner, foot pedal, and exhaust, and a comprehensive walk-around.

Maintenance Section

Mast Channel Lubrication

Procedure for lubricating mast channels to prevent metal peel and ensure smooth roller operation.

Maintenance Section

Transmission Oil Level Check

Steps for checking transmission oil level after warming the engine and ensuring it's between min/max marks.

Parking Brake Inspection and Testing

Inspection procedures for the parking brake from the operator's seat with the engine off and on.

Maintenance Section

Parking Brake Testing and Adjustment

Detailed procedure for adjusting the parking brake lever and testing its holding capability.

Fluid Level Checks

Procedures for checking brake fluid and drive axle oil levels.

Maintenance Section

Hydraulic Oil Level Check

Steps for checking hydraulic oil level after warming the oil, ensuring it's at the FULL mark on the dipstick.

Maintenance Section

Initial Engine Oil & Filter Change (Diesel)

Procedure for changing engine oil and filter for diesel engines, including draining and filter replacement.

Maintenance Section

Transmission Oil, Filter & Strainer Service

Steps for changing transmission oil, filter, and strainer, including draining and cleaning procedures.

Maintenance Section

Drive Axle Oil & Strainer Service

Procedure for changing and cleaning drive axle oil and strainer, including oil level maintenance.

Maintenance Section

Parking Brake Adjustment and Testing

Detailed procedure for adjusting the parking brake lever and testing its holding capability.

Maintenance Section

Engine Oil & Filter Change (LP & Gasoline)

Procedure for changing engine oil and filter for LP and gasoline engines, including crankcase and filter replacement.

Maintenance Section

Air Intake System Check and Clean

Service procedures for the air intake system, including checking and cleaning the precleaner and filter elements.

Maintenance Section

Cleaning Primary Filter Elements

Instructions for cleaning primary filter elements using compressed air or water, with warnings about pressure and element damage.

Maintenance Section

Air Cleaner Element Service and Belt Adjustment

Procedures for checking and replacing air cleaner elements and adjusting belts.

Maintenance Section

Mast Component Lubrication and Adjustment

Lubrication procedures for mast hinge pins, pivot eyes, tilt cylinders, and adjustment of cylinder rod extension.

Maintenance Section

Mast, Carriage, Lift Chains & Attachments Service

Inspection and lubrication of mast, carriage, lift chains, and attachments, listening for unusual noises.

Crosshead Rollers Inspection

Inspecting crosshead rollers, guards, and retainer rings for damage.

Maintenance Section

Transmission Oil Filter Change

Procedure for changing the transmission oil filter, including draining oil and filter replacement.

Parking Brake Testing and Adjustment Reference

Reference to the parking brake test and adjustment procedure in the 'First 50-100 Service Hours' section.

Control Shaft Lubrication and Light/Horn Check

Lubrication of control shafts and checking horn and lights for proper operation.

Maintenance Section

Drive Axle Oil & Strainer Service

Procedure for changing and cleaning drive axle oil and strainer, including oil level maintenance.

Overhead Guard Inspection

Checking overhead guard mounting bolts tightness and for bent or cracked sections.

Maintenance Section

Steer Suspension Inspection

Inspection of suspension mounting bolts, checking for leaks, and cleaning trash buildup.

Steering Mechanism Check and Lubrication

Lubricating steer axle king pins and steering link bearings, and checking steering mechanism components.

Maintenance Section

Wheel Bolt and Nut Tightness Inspection

Inspection of wheel bolt and nut tightness for steer and drive wheels on D, G, and GC series trucks.

Maintenance Section

Vacuum Line and Fitting Inspection

Visual inspection of vacuum lines and fittings for damage, softness, cracks, or kinks.

Electrical System Inspection

Checking electrical system harness connections for fuel lock-off, sensors, relays, and throttle for looseness or damage.

Fuel Trim Valve (FTV) Inspection

Visual inspection of the fuel trim valve for abrasions or cracking, and performing a blow-by test for leaks.

Maintenance Section

Diesel Engine Oil & Filter Change

Procedure for changing engine oil and filter for diesel engines, including draining and filter replacement.

Diesel Fuel Filter Change

Steps for replacing the diesel fuel filter at specified intervals to prevent contaminants affecting fuel flow.

Maintenance Section

PCV Valve System Service

Inspection and cleaning of the PCV valve and hose for G424I(E), G430FE, and G424P(E) engines.

Maintenance Section

Governor Lever and Engine Speed Control Check/Adjust

Checking and adjusting the governor lever and engine speed control for proper contact with idle limit screws.

Maintenance Section

Hydraulic Return Filter, Breather & Strainer Service

Procedure for checking and changing the hydraulic return filter, breather, and strainer.

Lift Chains Service

Testing lift chain wear, checking for equal tension, and adjusting chains for proper height and tension.

Maintenance Section

Lift Chains Service

Testing lift chain wear, checking for equal tension, and adjusting chains for proper height and tension.

Air Intake System Filter Change

Steps for changing primary and secondary air cleaner elements.

Maintenance Section

Coolant Hose Inspection (LP, Dual Fuel)

Visual inspection of coolant hoses and clamps for damage and replacement of worn hoses.

LP Regulator/Converter Inspection

Inspection of LP regulator/converter housing and fuel lines for leaks, and contact for internal checks.

Fuel Lines & Fittings Check

Visual inspection of fuel lines and fittings for physical damage and replacement as required.

Maintenance Section

Mixer Assembly Inspection

Inspection of the mixer assembly for procedures as per the LP mixer section of the engine service manual.

Throttle Assembly Inspection

Visual inspection of the throttle assembly motor housing for damage and necessary repairs.

Engine Valve Lash Check and Adjust (Diesel)

Procedure for checking and adjusting engine valve lash for diesel engines, including when adjustments are needed.

Maintenance Section

Every 1500 Service Hours or 9 Months

Inspection of ignition system, spark plug replacement, and fuel filter replacement for LP, gasoline, and dual fuel engines.

Maintenance Section

LP Fuel Filter Element Replacement

Steps for replacing the LP fuel filter element, including disassembly, cleaning, and reassembly.

Fuel Filter (LP Engine Only) Disassembly

Disassembly procedure for the LP fuel filter, including component removal and replacement.

Testing Fuel Lock-off Operation (LP Engine Only)

Procedure to test fuel lock-off operation by starting the engine and disconnecting the electrical connector.

Maintenance Section

Fuel Injectors (Diesel Engine Only) Service

Procedure for inspecting, cleaning, and testing diesel fuel injectors for optimal performance.

Maintenance Section

Every 2000 Service Hours or Yearly

Annual maintenance for engine valve lash, steer wheel bearings, drive wheel bearings, cooling system, and forks.

Steer Wheel Bearings Reassembly

Procedure for reassembling steer wheel bearings, including lifting, removing hub caps, and bearing cone handling.

Maintenance Section

Wheel Bearing Reassembly

Procedures for reassembling wheel bearings on D, G, and GC series trucks, including torque specifications.

Maintenance Section

Drive Wheel Bearing Service

Procedure for applying grease and reassembling drive wheel bearings on D, G, and GC series trucks.

Maintenance Section

Forks Inspection

Detailed inspection of forks for cracks, wear, damage, markings, and blade straightness.

Maintenance Section

Forks Inspection (Continued)

Detailed inspection of forks for cracks, wear, damage, markings, and blade straightness.

Fork Tip Height Check

Checking fork tip height difference for parallelism and allowable elevation differences.

Maintenance Section

Forks Inspection (Continued)

Detailed inspection of forks for cracks, wear, damage, markings, and blade straightness.

Fork Markings and Spacing Check

Checking fork markings for legibility and adjusting fork spacing for correct carriage height and tension.

Maintenance Section

Every 2500 Service Hours or 15 Months

Maintenance tasks including hydraulic oil checks, battery system inspection, and oxygen sensor replacement.

Hydraulic Oil Service

Procedure for checking, cleaning, and changing hydraulic oil, including dipstick checks and leak inspections.

Inspect Battery System

Steps for cleaning battery outer surfaces, inspecting for damage, and cleaning/repairing battery cables.

Maintenance Section

Replace Oxygen Sensor

Procedure for replacing oxygen sensors on the exhaust manifold and muffler assembly.

Inspect for Intake Leaks

Visual inspection of the intake manifold, throttle assembly, and adapters for looseness and leaks.

Replace PCV Valve and breather element

Procedure for removing and installing new PCV valves and hoses for G424I(E), G430FE, and G424P(E) engines.

Maintenance Section

Replace Spark Plugs (G424I(E) Engine Only)

Procedure for replacing spark plugs on G424I(E) engines, including gapping and torque specifications.

Environment Protection Section

Environment Protection Procedures

Guidelines for using authorized servicing areas and approved containers for waste disposal during maintenance.

Related product manuals

Doosan D33S-5 User Manual

Table of Contents

Questions and Answers:

Doosan D33S-5 Specifications

Summary

Information Section

Foreword

Safety Information Overview

Operation Overview

Information Section

Maintenance Overview

Environment Protection

Safety Section

Important Safety Information

Warning Signs and Labels

Operator Training and Safety Warnings

Safety Section

Parking Brake Operation and Inspection

Safety Section

General Hazard Information

Safety Section

Pre-Operation Procedures

Safety Section

Safe Lift Truck Operation

Safety Section

Load Handling and Parking Safety

Safety Section

Maintenance Safety Precautions

Safety Section

Hazard Prevention

Safety Section

Safety Equipment and Component Care

Safety Section

Operator Seat Adjustments

Safety Section

Seat Belt System

Safety Section

Seat Belt Operation

Safety Section

Tipover Prevention and Stability

Safety Section

Load Capacity and Stability

Safety Section

General Operating Safety Rules

Safety Section

Surviving a Tipover

General Section

Declaration of Conformity

General Section

Specifications Overview

General Section

Noise and Vibration Data

General Section

Load Capacity Charts (Without Sideshift)

General Section

Load Capacity Charts (With Sideshift)

General Section

Load Capacity Charts (Narrow Tire)

General Section

Load Capacity Charts (Wide Tire)

General Section

Serial Number Identification

General Section

Attachment Abbreviations

General Section

Operator Identification Plates and Mast Abbreviations

Operation Section

Operator Station and Monitoring Systems

Operation Section

Instrument Panel Layout

Operation Section

Instrument Panel Indicators and Gauges

Operation Section

Operator Controls and Indicators

Operation Section

Electrical and Engine Compartment Access

Operation Section

Audio System Controls

Operation Section

Audio System Display and Remote Control